The short answer
Labia vary enormously in size, shape, symmetry and color, and nearly all are normal. Darkening and changes with age, hormones and childbirth are also normal. Surgery may be considered when the labia cause real physical problems, such as pain, chafing or hygiene issues, or significant distress.
Your doctor can examine and reassure you, and discuss options honestly without pressure. See labiaplasty.
Answered by Dami Women's Clinic (다미산부인과의원), Yeouido, Seoul · Dr. Ko Sang-hyun, OB/GYN. General information, not a diagnosis. Emergencies in Korea: call 119. Medical disclaimer · International Patient Center